Mathematical modelling of producing hollow ingot by electroslag casting with liquid metal

Y. W. Dong, Lichun Zheng, Z. H. Jiang

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Electroslag casting with liquid metal (ESC LM) is a new technology in electroslag metallurgy. Solid ingot, hollow ingot and bimetal composite can be produced by the ESC LM process. Using both internal and external current carrying moulds for ESC LM is a new method for manufacturing hollow ingots. Liquid metal is employed directly during the ESC LM process rather than the conventional consumable electrode. The process was simulated using infinite element software ANSYS. The results indicate that the conductive path of the ESC LM process is entirely different from the conventional electroslag remelting process. There are two conductive current paths: one conductive path is transformerRexternal current conductive mouldRliquid slagRinternal current conductive mouldRtransformer, and another conductive path is transformerRexternal current conductive mouldRliquid slagRmolten steel poolRliquid slagRinternal current conductive mouldRtransformer. Current density, magnetic inductive intensity, electromagnetic force, Joule heat distributions and fluid flow are concentrated on the upper area of the slag pool. In addition, the higher temperature region of the slag pool is at the upper area of the slag pool. The superheat of the molten steel pool is lower than the conventional electroslag remelting process, which favours improving the quality of the hollow ingot. Simulation of the ESC LM process will help understanding the process and choose better operating parameters.

Original languageEnglish
Pages (from-to)153-158
Number of pages6
JournalIronmaking and Steelmaking
Volume40
Issue number2
DOIs
Publication statusPublished - 2013 Feb 1
Externally publishedYes

Keywords

  • Current carrying mould
  • Electroslag metallurgy
  • Hollow ingot
  • Quality
  • Simulation

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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